Funk & Wagnalls new encyclopedia; Volume 2, American English to assiniboine
Funk & Wagnalls, 1983
 Buku Referensi
Funk & Wagnalls new encyclopedia : volume 1
Funk & Wagnalls, 1983
 Buku Referensi
Funk & wagnalls new encyclopedia : volume 3, Assisi to Berkshire Hills
Funk & Wagnalls , 1983
 Buku Referensi
The Columbia-Viking desk encyclopedia : volume two, L-Z / compiled and edited at Columbia University by the staff of the Columbia Encyclopedia. William Bridgwater, editor-in-chief
compiled and edited at Columbia University by the staff of the Columbia Encyclopedia ; editor-in-chief, William Bridgwater
Viking Press, 1953
 Buku Referensi
The Columbia-Viking desk encyclopedia : volume two, L-Z / compiled and edited at Columbia University by the staff of the Columbia Encyclopedia. William Bridgwater, editor-in-chief
compiled and edited at Columbia University by the staff of the Columbia Encyclopedia ; editor-in-chief, William Bridgwater
Viking Press, 1960
 Buku Referensi